I agree with John R.
I would receommend against the Laptop. The g forces on a boat 30' and under would give it a very short life span. I used them on larger boats for years and they still don't make a real "boat laptop computer" especailly if your power boat is under 30'
Radio - I suggest looking at the "Digital Antennae's". Mine made a world of difference on my Horizon.
I'm on my 3 GPS. The first two (both color) I could not see on a bright day (not even sum bright). I just sold the Garmin 225 (color) and finally just bought the Northstar. Now I can see.
I've a Furuno 600 FF that on all but the direct sunlight I have no problem seeing. Still looking for the FF that finds fish when I can't.
CC with T-Tops you really need to checkout the screens, especially if your going to go with color screens.
I just saw one of the new Raytheon screens installed on a 26' CC. WOW Big screen, no computer everything integrated. Big $$$$$
